Metal & Mining
| Thu 12 Nov 2026
Beijing, Nov. 12 -- State Intellectual Property Office of China has awarded a patent to Shandong Weifang Tobacco for Double-ploughshare Deep Ploughing Plough for Sand Mountains and Hills. Wang Xingxin, Ma Mengmeng, Zhang Yang, Fan Zengbo, Xiong Ying, Mou Junda, Wang Wenqing, Li Qiang, Song Dewei, Xu Yongbo, Li Yang, Ma Qiang, Su..